package com.sxf.auth.login.service;

import com.cloud.apigateway.sdk.utils.Client;
import com.cloud.apigateway.sdk.utils.Request;
import com.sxf.auth.login.vo.SmsVo;
import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpRequestBase;
import org.apache.http.conn.ssl.NoopHostnameVerifier;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.ssl.SSLContextBuilder;
import org.apache.http.util.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

import javax.annotation.PostConstruct;
import javax.net.ssl.SSLContext;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.Arrays;

@Component
public class SendSms {

    private static final Logger LOGGER = LoggerFactory.getLogger(SendSms.class);

    public static final String UTF_8 = "UTF-8";

    private CloseableHttpClient client =  null;
    @Value("${sxf.sms.url:https://smsapi.cn-north-4.myhuaweicloud.com:443/sms/batchSendSms/v1}")
    private String smsUrl;
    @Value("${sxf.sms.appKey:iZm43ev45478KlZ325QQKT3530L8}")
    private String appKey;
    @Value("${sxf.sms.appSecret:pRyQFMmljdZEkgvrot9AK4nvkwWn}")
    private String appSecret;
    @Value("${sxf.sms.sender:8824042807515}")
    private String sender;
    @Value("${sxf.sms.sender:凯研通}")
    private String signature;


    @PostConstruct
    public void init(){
        try {
            client = createIgnoreSSLHttpClient();
        } catch (Exception e) {
            LOGGER.error("CloseableHttpClient 初始化失败");
            throw new RuntimeException(e);
        }
    }

    /**
     * 发送短信服务
     * @param smsVo
     * @throws IOException
     */
    public void sendSms(SmsVo smsVo) throws IOException {
        //必填,请参考"开发准备"获取如下数据,替换为实际值
//        String url = "https://smsapi.cn-north-4.myhuaweicloud.com:443/sms/batchSendSms/v1"; //APP接入地址+接口访问URI

        // 认证用的appKey和appSecret硬编码到代码中或者明文存储都有很大的安全风险，建议在配置文件或者环境变量中密文存放，使用时解密，确保安全；
//        String appKey = "iZm43ev45478KlZ325QQKT3530L8"; //Application Key
//        String appSecret = "pRyQFMmljdZEkgvrot9AK4nvkwWn"; //Application Secret
//        String sender = "8824042807515"; //中国大陆短信签名通道号或全球短信通道号

        //条件必填,中国大陆短信关注,当templateId指定的模板类型为通用模板时生效且必填,必须是已审核通过的,与模板类型一致的签名名称
        //全球短信不用关注该参数
//        String signature = "凯研通"; //签名名称
        //选填,短信状态报告接收地址,推荐使用域名,为空或者不填表示不接收状态报告
        String statusCallBack = "";

        /**
         * 选填,使用无变量模板时请赋空值 String templateParas = "";
         * 单变量模板示例:模板内容为"您的验证码是${NUM_6}"时,templateParas可填写为"[\"111111\"]"
         * 双变量模板示例:模板内容为"您有${NUM_2}件快递请到${TXT_20}领取"时,templateParas可填写为"[\"3\",\"人民公园正门\"]"
         * 查看更多模板规范和变量规范:产品介绍>短信模板须知和短信变量须知
         */
        String templateParas = "["+ smsVo.getSmsCode() +"]";
        //模板变量，此处以单变量验证码短信为例，请客户自行生成6位验证码，并定义为字符串类型，以杜绝首位0丢失的问题（例如：002569变成了2569）。

        //请求Body,不携带签名名称时,signature请填null
        String body = buildRequestBody(sender, smsVo.getMobile(), smsVo.getTemplateId(), templateParas, statusCallBack, signature);
        if (null == body || body.isEmpty()) {
            LOGGER.warn("body is null.");
            return;
        }

        Request request = new Request();
        request.setKey(appKey);
        request.setSecret(appSecret);
        request.setMethod("POST");
        request.setUrl(smsUrl);
        request.addHeader("Content-Type", "application/x-www-form-urlencoded");
        request.setBody(body);
        LOGGER.info("Print the body: {}", body);

        try {
            //SDK-HMAC-SHA256
            HttpRequestBase signedRequest = Client.sign(request, "SDK-HMAC-SHA256");
            LOGGER.info("Print the authorization: {}", Arrays.toString(signedRequest.getHeaders("Authorization")));
            Header[] requestAllHeaders = signedRequest.getAllHeaders();
            for (Header h : requestAllHeaders) {
                LOGGER.info("req Header with name: {} and value: {}", h.getName(), h.getValue());
            }

            HttpResponse response = client.execute(signedRequest);

            LOGGER.info("Print the status line of the response: {}", response.getStatusLine().toString());
            Header[] resHeaders = response.getAllHeaders();
            for (Header h : resHeaders) {
                LOGGER.info("Processing Header with name: {} and value: {}", h.getName(), h.getValue());
            }
            HttpEntity resEntity = response.getEntity();
            if (resEntity != null) {
                LOGGER.info("Processing Body with name: {} and value: {}", System.getProperty("line.separator"),
                    EntityUtils.toString(resEntity, "UTF-8"));
            }
        } catch (Exception e) {
            LOGGER.error(e.getMessage(), e);
        }
    }

    public CloseableHttpClient createIgnoreSSLHttpClient() throws Exception {
        SSLContext sslContext = new SSLContextBuilder().loadTrustMaterial(null, (x509CertChain, authType) -> true).build();
        return HttpClients.custom().setSSLSocketFactory(new SSLConnectionSocketFactory(sslContext, NoopHostnameVerifier.INSTANCE)).build();
    }

    private String buildRequestBody(String sender, String receiver, String templateId, String templateParas,
                                   String statusCallBack, String signature) throws UnsupportedEncodingException {
        if (null == sender || null == receiver || null == templateId || sender.isEmpty() || receiver.isEmpty()
            || templateId.isEmpty()) {
            System.out.println("buildRequestBody(): sender, receiver or templateId is null.");
            return null;
        }

        StringBuilder body = new StringBuilder();
        appendToBody(body, "from=", sender);
        appendToBody(body, "&to=", receiver);
        appendToBody(body, "&templateId=", templateId);
        appendToBody(body, "&templateParas=", templateParas);
        appendToBody(body, "&statusCallback=", statusCallBack);
        appendToBody(body, "&signature=", signature);
        return body.toString();
    }

    private void appendToBody(StringBuilder body, String key, String val) throws UnsupportedEncodingException {
        if (null != val && !val.isEmpty()) {
            LOGGER.info("Print appendToBody: {}:{}", key, val);
            body.append(key).append(URLEncoder.encode(val, UTF_8));
        }
    }
}
